zjs81/meshcore-open
1
0
Fork 0
mirror of https://github.com/zjs81/meshcore-open.git synced 2026-07-06 00:36:40 +10:00
Code Issues Packages Projects Releases 2 Wiki Activity

respect smaz encoding in message byte length calculation.

Browse Source
This commit is contained in:
ericz
2026-04-11 18:48:43 +02:00
committed by Enot (ded) Skelly
parent e97fb9bd24
commit b572314ae9
5 changed files with 62 additions and 14 deletions
Download Patch File Download Diff File Expand all files Collapse all files
lib/helpers/utf8_length_limiter.dart
+16 -3
View File
@@ -4,8 +4,14 @@ import 'package:flutter/services.dart';
class Utf8LengthLimitingTextInputFormatter extends TextInputFormatter {
final int maxBytes;
final String Function(String)? encoder;
const Utf8LengthLimitingTextInputFormatter(this.maxBytes);
const Utf8LengthLimitingTextInputFormatter(this.maxBytes, {this.encoder});
int _effectiveByteLength(String text) {
final effective = encoder != null ? encoder!(text) : text;
return utf8.encode(effective).length;
}
@override
TextEditingValue formatEditUpdate(
@@ -13,8 +19,7 @@ class Utf8LengthLimitingTextInputFormatter extends TextInputFormatter {
TextEditingValue newValue,
) {
if (maxBytes <= 0) return oldValue;
final bytes = utf8.encode(newValue.text);
if (bytes.length <= maxBytes) return newValue;
if (_effectiveByteLength(newValue.text) <= maxBytes) return newValue;
final truncated = _truncateToMaxBytes(newValue.text, maxBytes);
return TextEditingValue(
@@ -25,6 +30,14 @@ class Utf8LengthLimitingTextInputFormatter extends TextInputFormatter {
}
String _truncateToMaxBytes(String text, int limit) {
if (encoder != null) {
final runes = text.runes.toList();
while (runes.isNotEmpty &&
_effectiveByteLength(String.fromCharCodes(runes)) > maxBytes) {
runes.removeLast();
}
return String.fromCharCodes(runes);
}
final buffer = StringBuffer();
var used = 0;
for (final rune in text.runes) {